[MPlayer-users] filters order: pullup vs postprocessing

[D Richard Felker III]

On Thu, Mar 24, 2005 at 02:37:54AM +0300, Vladimir Mosgalin wrote:
> Hi D Richard Felker III!
> 
>  On 2005.03.23 at 16:39:32 -0500, D Richard Felker III wrote next:
> 
> > > If I want to use both postprocessing (say, spp) and pullup filter when
> > > encoding from dvd, in what order should they go? Will -vf spp,pullup
> > > order be OK in case of completely soft-telecined material? What about
> > 
> > if the material is completely soft-telecined, you should not be using
> > pullup, since it will just waste time, and either do nothing or
> > introduce errors!
> 
> Er.. Yes, my mistake - of course I meant hard telecine.
> 
> > if the material is hard-telecined whatsoever, you CANNOT apply
> > postprocessing to it directly or you will ruin the separation between
> > the fields by blurring them together. so always use -vf pullup,spp,...
> > > detc and filmdint filters instead of pullup?
> > 
> > detc most definitely does not pass the quantization info through, so
> > postproc filters will not work correctly after it. filmdint might; i
> > don't know. ivtc does not. pullup does.
> 
> Thanks, just what I needed to know.
> 
> However, pullup seems to perform much worse than detc and filmdint on
> this material, it prints a lot of "skip frame" messages - there are
> low-motion sequences up to 15 seconds where it can't drop anything at
> all. Is there some solution to get both postprocessing and nicer ivtc
> process than with pullup?

Explain better what's happening. It sounds like you have a long still
sequence during which ALL the fields are from the same source frame,
in which case it doesn't make any difference which ones you drop.

Rich